Safety-stop joe



c. L. DIT LEF SEN. SAFETY STOP FOR WINDOW SASHES.

APPLICATION FILED FEB. 26. l9l9.

'1 322,677. Patented Nov. 25-, 1919.

dam,

CHARLES L. DITLEFSEN, or sna r' mn, wasnmeron.

sarn'rv-sror non WINDOW-SASI-IES.

To all whom it may concern: 4

Be it known that 1, CHARLES L. Diaman- SEN, a citizen of the .United States, and resident of the city of Seattle, county of King, and. State of Washington, have invented certain new and useful Tmprovementsin Safety-Stops for Window-Sashes, of which the following is a specification. I

My invention relates to safety stops for window sashes or devices which are designed to permit opening of windows a certain amount and to preventthe possibility of opening any greater amount.

The object of my invention a simple form of device which may be tached to a window sash which will permit a limited opening of the window sash and prevent additional opening thereof, it being thus possible to adjust the window so as to secure ventilation without opening it enough to permit burglars entering through the windows. 'My invention consists tures of construction and combination of parts which will be herein described and then particularly defined in the claims.

In the accompanying drawings T have shown my device in the type of construction which I now most prefer.

Figure 1 is a front view of a portion of a window showing my device applied thereto.

Fig. 2 is a fragmentary section taken across a window sash showing the manner of applying my device thereto and its method of action.

Fig. 3 shows a front view'of mydevice with the abutment member in locked position.

Fig. 4 is a similar view showing tie abut ment member projected.

My invention employs a plate or basewhich is adapted to be secured to one of the sashes, preferably the upper one, and which has connected therewith a pivoted abutment plate which is adapted to swing into a recess formed in the sash, so as to be flush, or substantially flush, with the face of the sash and also to be swung outward so as to project enough to engage the other sashand prevent rising thereof beyond the position where it contacts with this abutment member. In the drawings 1 shows the base plate which is secured to or recessed into the face of the upper sash 2. This plate has a hole 10, located in the central portion thereof,

Specification of Letters Patent.

to provide of V the novel fea- Patented Nov. 25, 1919.

Application filed February 26, 1919.. Serial No. 279,268.

within whichis placed. the abutment member. Thejplate 1 may be secured in positlon on the shaft by screws 11, or in any other suitable manner. Abutment member 3 is herein shown as formed from a .plate of sheet metal, bent upon itself so as to form a U-shaped cross section. While this particular method of manufacture is not essential, it is desirable to have a recess in the inner side of said member-for the reception of the spring by which the abutment member is normally projected.

One end of theabutment member is pivoted upon thebaseplate at one end of the opening 10 therein. In the construction shown this is secured by forming a curved hook 12 in the body of the material from which the plate 1 is made, thisextending into the opening 10 and projecting toward the inner side of the plate, while the outer connecting section SOof-the abutment member has its corresponding end curved in ward to formfa curvedtoe 32, which is adapted to enter the hook 12. The toe shouldbe located suificiently inward from the end of the side flanks 31 of the abutment, so'that said flanks engage beneath the underside of the plate 1, when the abutment is withdrawn, or 1s put in the posltion which '18 mdicated by dotted lines 1n Fig. 2. By

this expedient the separation of the abutment and plate at the pivot endis prevented under any ordinary condition, although disengageable if desired. I

Between the two sides or flanges 31 of the abutments, is placed a spring a which issecured upona pin 1-0 and has one end thereof engaging with the outer side 30 of the abutment and the other end engaging with the inner face of the base plateil. This spring acts to normally swing the abutment outward and also to hold the pivot portions of abutment and plate in engagement.

Means should be provided for locking the abutment, both in its projected and its withdrawn positions. The means herein shown for accomplishing this consists of a small plate or disk 5, which is eccentrically pivot ed upon a pin 50. For convenience in operating this, it as one side turned up so as to make a narrow flange 51, by which it.

edge overthe end of the abutment to thus spring acting to project theswlngingend of said stop, anda locking member adapt-V prevent its being projected. This position is shown in Fig. 3. .7

When the abutment is drawn outward the disk may be turned so as toengage its edge with anotch 33 formed'in one or both of-the sides 31 of the abutment. In this position theabutment' cannot be withdrawn. In this position it projects suificientlyTto engage the top of the lower sashand prevent raising thereof; I preferto-place 1 upon the upper edge of the lower sash 6 .a nietal plate 60, so located'as to be engaged by the abutment and thus prevent marring oi the wood of the sash.-' y

' With a device of this type'so, applied to the sash, it is possible to open the windows, either at the top or bottom, to such a distance as will bring the abutment member 3 into contact with the lower sash and no further. This devicemay be located so that it cannot be released from-without the window; The locking plateor disk 5,'lies close between the faces of the upper-"and the lower sash and cannot be engaged from When not 111 use,

without so as to turn it.

7 the abutment member is forced back into 7 stop being-pivoted by one end to the base,

r V jectionable.

the hole 22 inthe upper sash'and' thus presome a flush'a-ppearance which is not ob- The device'ma'y be readily appliedto any and all kinds ofsash.

What I claim as my invention is:

1; A safety stop-for windows comprising a base plate having a hole therein for the reception of an abutment stop, an abutment stop having two separated fianksand adapted to enter said hole 1n the base-plate, sald a pin connecting said flanksinwardoflthe pivot, a spring lhcated between thefianks. of

the stop and secured about said pm, said i .ed to secure said stop in either projected or withdrawn position. j p U 7 Q. A safety stop 'forwmdows comprising a 'base plate adapted tobe secured to the j face of alsash and provided with a hole for the reception of an abutment stop, the metal ofthe base plate at the top of the hole forming a hook having an outwardly facing seat, an abutment member fitted within the hole and having an inturned toe pivotally' seated insaid hook and adapted to swing ,outwardlyat its lower end and means ior normally retaining the toe of the abutment member funct onally; within its seat.

I 3. A safety-stop for windows comprising I a baseplate adapted to befsecured to the Q face of a sash and provided with a hole for 60.

the reception of an abutment stop, the

metal of the base plate at the top oft'he hole being bent inwardly, then downwardly and; outwardly to form a hook having-an outwardly opening seat, an abutment stop' adapted to enter said hole of the base plate and having'two' separated side Hanks and T having an inturned too at its upper end removab ly pivoted'in said hook seatand a" spring mounted between said-flanks and act- 1ng to v project the swinging end of said stop and to retain the stop normally'in its seat.

4. A safety stop for windows comprising a base plate adapted to be secured to the two separated side-flanks and having an'inturned toe at itsupper endremova'bly pivfeted in said hook seat, a pin connecting said flanks inward of the pivot point, a spring located between the fianks of the stop see cured about said pin and acting to yieldingly retain the stop in functional position i and to projectthe swinging end of-stop, and a locking member adapted to secure, the stop in 'elther "pro ected; or withdrawn position. 7

' Signed at day of February, 1919;

V o AsnbiTLEFsE f Seattle, Washington, this 20th 

